Perhaps you should try some spelling variations:
"a robert b. heimann book" » "a robert b. german book", "3 robert b. heimann book", "a robust b. heimann book", "a robot b. heimann book", "a robert _. heimann book", "a robert j. heimann book", "a robert a. heimann book"
"dr robert e. hermann book" » "dr robert e. german book", "dr robert e. hermann broch", "dr robert e. hermann lohr", "dr robert _. hermann book", "dr robert j. hermann book"
"_ robust e. hermann book" » "_ robust e. german book", "_ robust e. hermann broch", "_ robust e. hermann lohr", "_ robert e. hermann book", "_ robust _. hermann book", "_ robust a. hermann book", "_ robust end. hermann book"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dr robert e. hermann book") or ("_ robust e. hermann book"))) or ("a robert b. heimann book"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dr robert e. hermann book") OR ("_ robust e. hermann book"))) OR ("a robert b. heimann book")).
• Removing quotes may allow a broader search: (((( dr robert e. hermann book ) or ( _ robust e. hermann book ))) or ( a robert b. heimann book )).
• Adding a wildcard symbol may retrieve word variants: (((("dr robert e. hermann book") or ("_ robust e. hermann book"))) or ("a robert b. heimann book"))*.